Pretty simple and done-before approach.  Heavy board control leveraging Mutilate as the sweeper and complemented by a versatile removal package. 

It utilizes the combination of life-for-cards in Sign in Blood/Underworld Connections and potent lifelink creatures like Nighthawk and Thragtusk to speed through to answers and keep them flowing despite hopefully discarding a lot to Liliana. 

Vraska provides additional removal and can create a soft-lock against creature strategies working with Liliana.  She also offers another win condition that feeds into this deck's strength in board control.

Garruk provides yet some more removal, but importantly another threat.

Keyrunes were added more recently because they help boost/fix mana and are great against opposing Thragtusks, Zombies, Gheist, other small aggro, while also being a strong threat against control.

Concerning match-ups are real fast aggro and uber-control decks like Mill and Miracles.